Toothed Belt Tension - Duerkopp Adler 745-34 Service Instructions Manual

14.6 Toothed belt tension

2
Standard checking
Over half the tightening length S=145 the toothed belt 1 must bend
under the test load Fv=6 N so that the loaded belt just touches the
unloaded one.
Correction
–
Remove the single piping stop completely. (See chapter 14).
–
Pull the lower belt against the upper one through the opening in the
rest table by means of a spring balance.
–
Loosen 4 motor fastening screws and turn core pin 3. The belt
tension changes.
–
Tighten the screws 2 again and reinsert the single piping stop.
Consequences of a too high belt tension
–
Reduced durability of the toothed belts
–
Reduced durability of the step motor
–
Noisy running
Consequences of a too low belt tension
–
No faultless meshing
–
The teeth may skip over under load
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